ACV
Overheating Electrical Component or Dust Burn-Off
Boiler emits a burning smell or plastic smell during operation
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Dust on heat exchanger or flue, Overheating pump or fan motor, Loose electrical connection, Failing PCB component
How to Fix / Troubleshooting
Safety first: If you see smoke, sparks, or strong burning smell, turn off power immediately and do not use the boiler.
- Initial use: A slight smell on first use after installation or long inactivity can be normal as dust burns off. This should clear quickly.
- Inspect around boiler: Ensure no plastic packaging, insulation, or combustible materials are touching the flue or casing.
- Listen for unusual noises: A noisy pump or fan combined with smell suggests motor overheating.
- Professional inspection: A technician should open the boiler, check for signs of overheating, loose connections, or damaged components, and rectify as needed.
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Repair Difficulty
Hard
4/5
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